@misc{indiciae5e19d29034b7,
  title = {Gallstones.},
  author = {D M Small},
  year = {1968},
  doi = {10.1056/nejm196809122791106},
  url = {https://pubmed.ncbi.nlm.nih.gov/4875455/},
  note = {Source identifier: 4875455}
}